Locomotive comprising two cars



June 15 1926.

F. LJUNGSTRM LocoMoT-Ivm COMPRISING Two CARS ,Filed August' 3*. 1922 Patented .l une 15, 19.26.

UNITD STATES PATENT EFICE.

FREDREK LJNGSTRM, 0F LIDINGO-BREVK, SWEDEN, ASSG'NOR T0 AKTIE- BOLAG'ET LJUNGSTRMS ANG'IURBN, OT? STCKHGLRL SWEDEN, A GQBPORATION.

AppIicat-ion filed `August 3, 1922, eral No. 579.54?, and in Sweden March 24, 1922.

in locomotives comprisingtwo cars, it has been proposed to connect the cars 1n such. a'

manner that a detinite pivot is obtained. Difficulties have then arisen, particularly in `meater locomotives. in arranging a drivingr .set located between these two cars in such a manner that the desired distribution of the wheel. pressure is attained.. In greater cars it has also been necessary to mount the two cars on bogies, ditliculties having then been encountered in arranging leading` vwheels for the driving wheels, and in so arranging the driving set andthe bogies that the guiding pressures produced on the driving wheels would he the most suitable and not exceed a dangerous value., while the wheel pressures would be suiiiciently git-eat. y

The present invention has tor its purpose to remove these diiiiculties'and it principally consists therein that some or all ot the rear wheels ot the leading car are gathered to- ;lether with some or all ot the front wheels of the trailing` car in a common bogie which is movable with respect to the two cars carried thereby.

The invention is illustrated in the accompanying' drawing. Figs. 1, 2 and 3 show diagranm'iatically three embodiments thereof, all. ot' which consist of a leading boiler car and a trailingl condenser car onV which the dri ving` motor (the turbine) is arranged.

Fig'. 4 illustrates the manner in which the two vehicles according,r to the embodiment shown in Fig. 2 are mounted on the common bogfie, only the `trames ot the two vehicles being shown.

ln all figures, 1 denotes the leading car which carries the boiler 2 and the drivers cab 3 ot the locomotive, 4 designates the trailing' car which carries the air-cooled condenser o't the locomotive and a liquid con tainer 6 situated underneath the condenser. The two cars 1 and 4 are mounted on a bogie 7 which is constituted by a frame containing the rear wheels ot the leading car 1 and the trent wheels ot the trailing` car 4. All of these wheels are shown in the drawing as driving; wheels driven from the driving set 14 of the locomotive, said driving set consisting tor instance of a steam turbine from which the motion is transmitted to the'drivingl wheels by means of coupling` rods through the medium of one or more gearings 8 and7 it' found suitable, through a lay shaft.

The leading car 1 is mounted at its fore end on a pair ot wheels 11' serving as leading` wheels. 'ihrs pair ot wheels 11 may alsoy be replaced by a bopjie comprising one or stituted by the condenser receptacle 6erranged on this car.

According to the embodiment shown iny Figure 2, the trames of the two cars l, 4 are coupled together directly and mounted on a common pivot 13 disposed on the common bogrie 7 and situated between the two cars, (see particularly Figzy4), whereby only one axis ot rotation is obtained between the cars, which is advantageous with respect to the extending' ot the pipings from the one car to the other. The driving set 8 is preferably located in this place 13.

Jftccording to Figure 3, the cars are coupled together and mounted on the common pivot 13 on the bogie 7 in a manner similar to that in Figures 2 and 4. said pivotv 13 in this embodiment being situated underneath the condenser receptacle 6.

The connection between the toothed gearing ofthe steam motor, the driving' wheels and the condenser maybe arranged in various ways. l/Vhen a bogie is used, as in the present case, a movable connection must evidently be provided between some of the above-mentioned parts. It the steam motor in its entirety is carried by the bogie, the same being thus adapted to be rigidly connected with the toothed gearingl and the' driving arrangement, a movable connection must be arranged between the same and the condenser.

In the embodiment shown in Fig. 1, the piping` 15 extends from the Steam motor 14 into the con-denser receptacle 6 withwhich it is movably connected by means ot a spherically movable and tightening coupling 16 which is preferably arranged immediately above the bearing` point 10 ot the car on the boge 7 It the driving set is disposed above the any suitable number common pivot- 13, as in Fig. 2, the spherical coupling may be preferably arranged beside the steam motor 14 above the pivot 13.

In the embodiment shown in Fig. 8, the movable coupling'l is arranged, as in Fig. 1, above the bearing point 13 of the car on the bogie 7.

Obviously, a number of modifications of the invention may be conceived. For instance, the driving set may be disposed in another place on the locomotive, and the bogie 7 may have another shape than what is shown diagrammatically in the drawing, it being for example provided with a greater or lesser number ot wheels than shown, all of which need not be driving wheels. With a locomotive constructed according to the invention and comprising two cars mounted on a bogie, it is possible to distribute the wheel pressures and the guide pressures bet ter than hitherto. Such a locomotive may also pass through curves having compara tively small radii, which is necessary in switching in the locomotive on tracks at stations, locomotive sheds, etc., whereby locomotives with great driving capacity may thus be built with a reasonable length without becoming inconvenient.

Vhat I claim as new and desire to secure by Letters Patent of the United States is 1. A locomotive comprising two connected vehicles in ywhich the leading vehicle carries the boiler and the trailing vehicle a condenser pertaining to said locomotive, at least one pair ot thev rear wheels oi! the leading vehicle being embodied together with at least one pair of the iront wheels ot' the trailing vehicle in a common bogie, said. common bogie being movable with respect to the two vehicles carried thereby and carrying a steam turbine device and a toothed gearing connected thereto and transmitting motion from the steam turbine to the driving wheels ot the locomotive.

2. An arrangement according to claim 1, characterized by the two vehicles being mounted on the common bogie in or approxiimately in the point in which they are coupled together.

3. An arrangement according` to claim 1, characterized by the two united vehicles being mounted on the common bogie in .a place situated between the two vehicles.

In testimony whereof I al'lix my signature.

FREDRIK LJUNGsTRoM. 

